#include <bits/stdc++.h>
using namespace std;
int main() {
  int n;
  cin >> n;
  n = n * 2 - 1;
  for (int i = 0; i < n; i++) {
    for (int j = 0; j < n; j++) {
      if (j >= i && j <= n - 1 - i || j <= i && j >= n - 1 - i)
        cout << "*";
      else
        cout << " ";
    }
    cout << endl;
  }
  return 0;
}